Add language support with english and german supported

script.js

@@ -72,3 +72,19 @@ document.addEventListener("DOMContentLoaded", () => {
         })
     })
 })
+
+// Language support
+async function getLanguageData(lang){
+    const response = await fetch(`languages/${lang}.json`);
+    return response.json();
+}
+
+document.addEventListener("DOMContentLoaded", async () => {
+    const userLang = navigator.language || navigator.userLanguage;
+    const langData = await getLanguageData(userLang);
+
+    document.querySelectorAll("[data-i18n]").forEach((element) => {
+        const key = element.getAttribute("data-i18n");
+        element.innerHTML = langData[key];
+    });
+})